Gottlob schaeffee



G SOHAEFFER Magnetic Separator.

No. 234,816. Patented Nov. 23,1sso.-

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IATES UNITE ATENT Erica.

MAGNETIC SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 234,816, dated November23,1880.

Application filed December 2, 1878.

To all whom it may concern Be it known that I, GoTTLoB SOI-IAEFFER, ofGo'ppingen, Wiirtemberg, Germany, have invented a new and usefulImprovement in Apparatus for Separating Iron from Grain and otherSubstances; and I do hereby declare that the following is a full andexact description thereof.

My improvement consists in the special arrangement of magnets in adownwardly-inclined feeding-surface, each magnet consisting of apositiveand negative pole, which project in parallel separate rows through andabove or on a plane with and across the feeding-surface, and withcoincident spaces between said poles in line with the moving grain,while each separate magnet is united by an under tie-bar, so as in theaggregate to form one magnet, whereby the full force of both poles ofeach magnet is obtained, and their disposition in one or more doublecross-rows gives the advantage of a uniform attraction across the pathof the grain, so that metallic substances passing will be attracted andheld, while the grain will pass freely down the incline. The poles passthrough mortises in the feeding-surface, which holds them in properrelation to each other, while the magnets are supported in relation tothe feeding-surface by an under metal tie-bar, which serves also as ameans of uniting the inner ends of the magnets and merging the power ofeach, so as to constitute a single magnet with a series of separatedpositive and negative poles, and thus obtain a magnet of great power anda perfect separation of the iron from the grain.

Metallic substances, such as nails and pieces of wire, find their way inthe grain in the operation of thrashing and in cutting the bands of thesheaves, and unless removed the rolls or millstone-surfaces would bedamaged.

On the accompanying drawings, Figure 1 is a front view of one form ofappa *atus employed for carrying out the invention; Fig. 2, a section online A B in Fig. 1; Fig. 3, a section on line C D in Fig. 2, and Fig. 4an. inside view of part of Fig. l.

Extending across between the two end cheeks or brackets, to a, of acast-iron frame. are arranged in pairs parallel rows of steel magnets bb c 0, one row of which, I) I), is composed of south poles and the otherrow, 0 c, of north poles. The lower ends of these down which the corn orgrain is caused slowly to pass, and in so doing passes over the pro.-jecting ends or poles of the magnets b b c c, which seize upon orattract the pieces of iron contained in the grain, and which can then bereadily removed by stopping the supply of the corn or grain or themagnets b b c 0 may be arranged to hang over the sloping board or plankf, or in any other manner that may be found most advantageous.

1 am aware that prior to my invention a magnetized surface has beencombined with an inclined feeding surface or hopper for separating ironfrom grain and other substances in the operation of grinding, and thataseries of powerful magnets have been arranged in a hopper or trough forthe same purpose, and I therefore do not claim such combination broadly.

1 claim as my invention- 1. In apparatus for separating iron from grainand other substances, the combination of a downwardly-inclined feedingway or surface with a series of separate magnets, b 0, arranged inparallel separate rows across said feedingsurface, with coincidentspaces between their poles in line with the moving grain,said sepaaratemagnets being connected to form a single magnet, substantially as setforth.

2. In apparatus for separating iron from grain and other substances, theseparate magnets c, secured at their poles in mortises in the inclinedfeeding-surface, and supported in relation to said surface and to eachother by the metallic tie-bar d, whereby to form a single magnet havinga series of separate and separating collecting poles projecting above orflush with said feedingsurface, substantially as herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this3d day of April, 1878.

GOTTLOB SCHAEFFER.

Witnesses:

GEoRe Mi'ILLER, J AKOB HAUSER.

